[FEATURE] Allow users to specify custom track line thickness and transparency

[Korb]

Is your feature request related to a problem? Please describe.
At present, the track line is extremely thick, overlapping toponyms and cartographic elements, and disproportionate to them. At the same time, when there are several lines, or the movements of tracked trackers occur in a limited area, the information content of the map with tracks is greatly reduced.

Describe the solution you'd like
In the application settings, the user can change the preset value of the track thickness (24 px) to something else, as well as specify the transparency from the default value (0%) to, for example, 90% in 10% increments.

Describe alternatives you've considered
At the moment, I don't see an alternative solution to hide an opaque line of enormous thickness with the available means.

Additional context